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Question

The first ionisation energies of the elements of the first transition series ($$Ti$$ to $$Cu$$):


A
increases as the atomic number increases
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B
decreases as the atomic number increases
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C
do not show any change as the addition of electrons takes place in the inner (n1)dorbitals
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D
increases from Ti to Mn and then decreases from Mn to Cu
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Solution

The correct option is D increases as the atomic number increases
First ionisation energies of 3d-series (first transition series) increases with increase in atomic number due to: 
(a) increase in nuclear charge. 
(b) decrease in atomic size.

Chemistry

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